Pentax K-01 Digital Camera Review$899.95
This camera does an excellent job keeping distracting image noise below 1.00% through ISO 3200, even with noise reduction software turned completely off. At ISO 6400 and above, noise rates increase exponentially (though this is expected), up to 3.37% at ISO 25600. By comparison, the sensor only produces 0.40% noise at ISO 100. More on how we test noise.
The K-01's ISO sensitivities start at 100 and stretch all the way to 25,600. It's not every camera that can go this far, both the Nikon J1 and Canon G1 X cannot. One convenient feature is the ability to customize the automatic ISO function to meter between 100 and any other sensitivity, including 25,600.